I haven't rewatched recently, but I remember the first time I saw this episode two thing jumped out at me. The first was Lincoln's identification of Clarke as the leader. I remember really liking that aspect of the previous ep, where she's the one who ultimately makes the call on whether to torture him or not. But seeing it so explicit her was a great moment.

I also remember being a bit thrown by the grounders speaking English. I mean, it makes perfect sense, and why wouldn't be American English, but all we'd had up until then was silence.